Most replicas, including my own early cars, errantly use the formed 356D style dash trim strip which is bulkier and bulbous compared to the speedster. I took the liberty to copy the dash trim on my original speedster after purchasing it (10 years ago now) and that is how we have done it since. The original was a cut piece of aluminum with studs riveted in, covered in foam that was slightly tapered on the edges and the vinyl/leatherette material was over top of it and laced along the back like shoe strings, pulled tightly to get the wrinkles out. We don't lace the back like this, rather stretch and glue it, and rather than using aluminum I use a formed piece of composite, but the result is the same.